Convert these plz 1. 1.29 x 10^24 atoms of HF to grams

2. 3.14g of H2O to molecules

3. 2.79g NH3 to atoms

4. 4.90 mol Al2O3 to grams. To atoms

5. 3.56g of Cu to atom

How is the composition of a meteorite relevant to finding out the composition of earth's core?

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity